Massage roller



FIG. 1 is a perspective view of a massage roller showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The use of broken lines in the drawings illustrate environmental structure that forms no part of the claimed design.

The dot-dash-dot lines shown in the drawings illustrate a boundary of the claimed design. 

CLAIM The ornamental design for a massage roller, as shown and described. 